Suppress the c++11 -Wdeprecated warning for 'register' if it is expanded from a
macro defined in a system header. glibc uses it in macros, apparently.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@184005 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Parse/ParseDecl.cpp b/lib/Parse/ParseDecl.cpp
index 8d96d6e..70a7ea5 100644
--- a/lib/Parse/ParseDecl.cpp
+++ b/lib/Parse/ParseDecl.cpp
@@ -2771,7 +2771,11 @@
PrevSpec, DiagID);
break;
case tok::kw_register:
- if (getLangOpts().CPlusPlus11)
+ // In C++11, the 'register' storage class specifier is deprecated.
+ // Suppress the warning in system macros, it's used in macros in some
+ // popular C system headers, such as in glibc's htonl() macro.
+ if (getLangOpts().CPlusPlus11 &&
+ !PP.getSourceManager().isInSystemMacro(Tok.getLocation()))
Diag(Tok, diag::warn_deprecated_register)
<< FixItHint::CreateRemoval(Tok.getLocation());
isInvalid = DS.SetStorageClassSpec(Actions, DeclSpec::SCS_register, Loc,